Cultivator.



PATENTED MAR. 2.9, 1904.

M. PRUYN.

CULTIVATOR.

APPLICATION IILE'D D30. 18. 1903.

H0 MODEL.

I I I i I III II MLMMW No. 755,932. l f l Patented March 29, 1904. M?

I UNITED STATES PATENT ()FFICE.

MARCELLUS PRUYN, OF FLORIN, CALIFORNIA, ASSIGNOR OF ONE-HALF- TO R. M.JONES, OF ELORIN, CALIFORNIA.

CULTIVEATOR.

SPECIFICATION forming part of Letters liatent No. 755,932, dated March29, 1904. Application filed December 18, 1903.? Serial No. 185,647. (Nomodel.)

To w/wm it y COW/667%! V vator hinged to a transverse bar B and diver- 5Be it known that I, MAROELLUS PRUYN, a citifgent toward the rear. I Zenof the United States, residing at Florin, in G is a clevis. 2 2 arecultivator-teeth fixed the county of Sacramento and State of Calito thefront portion of this device, and spaces 5 fornia,have'invented new anduseful Improveare left between these front teeth and the rear ments inCultivators, of which the following end of the divergent bars A, so thatwhen the 55 is a specification. cultivator is drawn between theplant-rows the My invention relates to improvements in deaction of thesefront teeth will be to pulverize vices for cultivating the earth,and isespecially the earth and the clods,and coarse unpulverized applicable tothat class of cultivators known material will after passing these frontrows as the A-cultivator, having sides diverging of teeth pass under thebars A and into the cen- 60 from the front,where they are united,andprotral portion. 1 vided with cultivating-teeth. To the rear ends of thebars A are pivoted My improvement consists in the employthe bars 4,andthese bars converge toward the I 5 ment of reversed or convergent barshinged rear and are provided with cultivatorteeth,as

to the rear of the divergent ones and means shown at 5. 5 by which therear ends of said bars are drawn 6 is a centrally-disposed bar extendingreartoward or separated from each other. wardly from the transverse barB, to which My invention also comprises details of conthe front ends ofthe bars'A are hinged. 7 is struction, which will be more fullyexplained a socket-piece fixed to this bar approximately by reference tothe accompanying drawings, in line between the hinges 8,which connectthe 7 'in whichbars A and 4, and 9 is a slide movable upon the Figure 1is a plan View of my invention,dotcentral bar 6. ted lines showingadjustment. Fig. 2 is a side 10 represents links having the inner endselevation of same. Fig. 3 is an enlarged side pivoted to the slide andthe outer ends conview of a cultivator-tooth. Fig. 4 is a-front nectingwith links 11, the outer ends of which view of same. a are pivoted tothe joints.

1n the operation of what are known as A- The meeting ends of the links10 and 11 are cultivators the fine earth passes between the pivotedtogether, and bars 12 connect this joint 3 teeth and toward the centerand between the with the block or socket-piece 7. Other bars rows whichare where the cultivator travels, 13 extend rearwardly from this block 7and the fine earth being thus drawn awayfrom the are pivoted to the bars4', as shown at 14. plant-row, leaving the last tooth and an open Thesejointed connecting-bars serve to unite furrow close to theplant-row,while the clods and adjust the outside bars A and 4, forming 35 and coarse material will be thrown outward, the cultivator, asfollows:

passing around the ends of the cultivator, and 15 is asegmentally-toothed rack fixed to 5 they are left on or near theplant-row. My the rear portion of the central bar 6, and 16 improvementisdesigned to reverse this operis a lever fulcrumed to move radiallyover ation by the use of the reversed or converged this segmental arc.-Pivoted to the lever 16 4 portions of the frame, and by leaving a spaceis an arm 17 which extends from the lever to between the front teeth andthose of the rethe slide 9. The lever-arm carries a spring- 9 Verse-bar,through which the clods pass inpressed pawl, as at 18, operated by theusual wardly, where they clog the center of the rows, connecting-rod andlever-arm 19, so that the where they may be readily pulverized, whilepawl may be disengaged from the segmental 45 the fine earth is thrownoutwardly,and the last rack and the lever-arm moved backward or n orfurrow row formed by the convergent ends forward. When this lever-arm ismoved forof the rear portion of the cultivator will be apward, the slide9 will also be moved and the proximately four teeth distant from therows. Various connecting-links will be moved in A A represent the frontside bars of aoultiunison, so that the sides A and 4 of the cultivatorwill be drawn nearer together, and the cultivator may be adjusted topass beneath narrow rows or for other purposes The reverse movement ofthe lever moves the slide 9 toward the rear, and acting through theconnecting-links 10, 11, and 12 the junction of the bars A and et willbe separated and the cultivator made correspondingly wider.

The links 13 connecting the block 7 with therear ends'of the bars 4-maintain the rear ends of these bars in the proper position withrelation to each other and prevent their being spread out in unison withthe spreading of the jointed angles at 8. In this manner I am enabled toaccurately adjust the cultivator to the character of work which is to bedone,

and the teeth of the rear ends of the bars 4, which form the finalfurrow, will be so far away from the plant-rows as not to leave theroots too much exposed, While the clods and coarse material being drawnin by the rows of teeth on these converging sides 4: will be left nearthe center between the rows, where they can be easily pulverized. Thefine dirt passing outward between the'teeth 5 of these convergent rowswill in like manner be thrown outward close up to the plant-rows, thusfulfilling all the conditions for the best cultivation of the. soil andfor the good of the plants.

It will be manifest that any suitable or desired form of teeth may beemployed in this apparatus which will best produce the results to bearrived at, as above described.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. The combination in a machine of the character described oftooth-carrying bars having the front ends contiguous to each other anddivergent toward the rear, other tooth-carrying bars pivoted to the rearends of the front bars, said second bars converging from the jointtoward the rear, and means including a transverse link connection withthe joint between the meeting ends of the front and rear bar whereby themeeting ends of the two sections may be separated or drawn toward eachother. I

2. The combination in a machine of the character described oftooth-carrying bars having the front ends pivoted contiguous to eachother, and -to a draft mechanism, said draft diverging toward the rear,other toothcarrying bars hinged to the rear ends of the divergent barsand convergent from the hingejoint to the rear transverse linksapproximately in the plane of the joint between the meeting ends of thefront and rear bars and pivotally connected; and centrally-disposedslidable and stationary blocks connected with the links whereby themeeting ends of the two sets of bars may be separated or drawn towardeach other, and the rear ends of the convergent bars maintained at aproper distance apart.

3. The combination in a machine of the character described of tooth-barshaving the f ont ends pivoted contiguous to each other and to a draftmechanism, said bars diverging from their pivot-points toward the rearand having teeth near the front end only whereby clods and coarsematerial are allowed to pass into the central portion, other bars hingedto the rear ends of the divergent bars, said second bars converging fromthe hinges to the rear end and carrying teeth by which the pulverizedearth is thrown outwardly toward the plant-rows and the clods arecarried toward the center and mechanism disposed in substantially thetransverse plane of the meeting ends of the front and rear bars andincluding links connecting with said meeting ends and sta tionary andslidable blocks whereby the width of the jointed frame may be increasedor diminished.

4. The combination in a machine of the character described oftooth-carrying bars having the front ends hinged contiguous to eachother and a draft mechanism divergent from the hinge-points rearwardly,other toothcarrying bars hinged to the rear ends of the first named barsand. convergent from the hinges to the rear ends, a centrally-disposedbar extending from the front toward the rear, a segmentally-toothed rackfixed near the rear end of the central bar, a lever and pawl movablewith relation to said rack, a slide movable upon the central bar and arod connecting the lever with said slide, links pivoted to the slide andother links pivoted atthe uniting joints of the toothed bars, and alsoto the first-named links, other links connecting the joints between thetwo sets of links above named with a stationary point upon the centralbar and links connecting this stationary .point with the rearmosttooth-bars whereby the junction of the front and rear tooth-bars may beexpanded or contracted.

5. The combination in a machine of the character described, oftooth-carrying bars having the front ends hinged contiguous to eachother and divergent rearwardly from said joint, other tooth-carryingbars hinged to and convergent rearwardly from the rear of saidfirst-named bars, means including links disposed in substantially thetransverse plane of the meeting ends of the front and rear bars forexpanding or contracting the width of the cultivator, and connectionswhereby the rear tooth-bars are automatically adjusted in unison withsaid expansion or contraction.

In testimony whereof I have hereunto set my hand in presence of twosubscribing .wit-

nesses.

MARGELLUS PRUYN.

VVitn esses:

E. OPPENHEIM, L. M. LANDSBOROUGH.

